//********************************************************
//
// Assignment 7 - Structures and Strings
//
// Name: <replace with your name>
//
// Class: C Programming, <replace with Semester and Year>
//
// Date: <replace with the current date>
//
// Description: Program which determines overtime and
// gross pay for a set of employees with outputs sent
// to standard output (the screen).
//
// This assignment also adds the employee name, their tax state,
// and calculates the state tax, federal tax, and net pay. It
// also calculates totals, averages, minimum, and maximum values.
//
// Call by Reference design
//
//********************************************************
// necessary header files
#include <stdio.h>
#include <string.h>
#include <ctype.h>
// define constants
#define SIZE 5
#define STD_HOURS 40.0
#define OT_RATE 1.5
#define MA_TAX_RATE 0.05
#define NH_TAX_RATE 0.0
#define VT_TAX_RATE 0.06
#define CA_TAX_RATE 0.07
#define DEFAULT_TAX_RATE 0.08
#define NAME_SIZE 20
#define TAX_STATE_SIZE 3
#define FED_TAX_RATE 0.25
#define FIRST_NAME_SIZE 10
#define LAST_NAME_SIZE 10
// Define a structure type to store an employee name
// ... note how one could easily extend this to other parts
// parts of a name: Middle, Nickname, Prefix, Suffix, etc.
struct name
{
char firstName[FIRST_NAME_SIZE];
char lastName [LAST_NAME_SIZE];
};
// Define a structure type to pass employee data between functions
// Note that the structure type is global, but you don't want a variable
// of that type to be global. Best to declare a variable of that type
// in a function like main or another function and pass as needed.
struct employee
{
struct name empName;
char taxState [TAX_STATE_SIZE];
long int clockNumber;
float wageRate;
float hours;
float overtimeHrs;
float grossPay;
float stateTax;
float fedTax;
float netPay;
};
// this structure type defines the totals of all floating point items
// so they can be totaled and used also to calculate averages
struct totals
{
float total_wageRate;
float total_hours;
float total_overtimeHrs;
float total_grossPay;
float total_stateTax;
float total_fedTax;
float total_netPay;
};
// this structure type defines the min and max values of all floating
// point items so they can be display in our final report
struct min_max
{
float min_wageRate;
float min_hours;
float min_overtimeHrs;
float min_grossPay;
float min_stateTax;
float min_fedTax;
float min_netPay;
float max_wageRate;
float max_hours;
float max_overtimeHrs;
float max_grossPay;
float max_stateTax;
float max_fedTax;
float max_netPay;
};
// define prototypes here for each function except main
void getHours (struct employee employeeData[], int theSize);
void calcOvertimeHrs (struct employee employeeData[], int theSize);
void calcGrossPay (struct employee employeeData[], int theSize);
void printHeader (void);
void printEmp (struct employee employeeData[], int theSize);
void calcStateTax (struct employee employeeData[], int theSize);
void calcFedTax (struct employee employeeData[], int theSize);
void calcNetPay (struct employee employeeData[], int theSize);
struct totals calcEmployeeTotals (struct employee employeeData[],
struct totals employeeTotals,
int theSize);
struct min_max calcEmployeeMinMax (struct employee employeeData[],
struct min_max employeeMinMax,
int theSize);
void printEmpStatistics (struct totals employeeTotals,
struct min_max employeeMinMax,
int theSize);
// Add your other function prototypes if needed here
int main ()
{
// Set up a local variable to store the employee information
// Initialize the name, tax state, clock number, and wage rate
struct employee employeeData[SIZE] = {
{ {"Connie", "Cobol"}, "MA", 98401, 10.60},
{ {"Mary", "Apl"}, "NH", 526488, 9.75 },
{ {"Frank", "Fortran"}, "VT", 765349, 10.50 },
{ {"Jeff", "Ada"}, "NY", 34645, 12.25 },
{ {"Anton", "Pascal"},"CA",127615, 8.35 }
};
// set up structure to store totals and initialize all to zero
struct totals employeeTotals = {0,0,0,0,0,0,0};
// set up structure to store min and max values and initialize all to zero
struct min_max employeeMinMax = {0,0,0,0,0,0,0,0,0,0,0,0,0,0};
// Call functions as needed to read and calculate information
// Prompt for the number of hours worked by the employee
getHours (employeeData, SIZE);
// Calculate the overtime hours
calcOvertimeHrs (employeeData, SIZE);
// Calculate the weekly gross pay
calcGrossPay (employeeData, SIZE);
// Calculate the state tax
calcStateTax (employeeData, SIZE);
// Calculate the federal tax
calcFedTax (employeeData, SIZE);
// Calculate the net pay after taxes
calcNetPay (employeeData, SIZE);
// Keep a running sum of the employee totals
// Note: This remains a Call by Value design
employeeTotals = calcEmployeeTotals (employeeData, employeeTotals, SIZE);
// Keep a running update of the employee minimum and maximum values
// Note: This remains a Call by Value design
employeeMinMax = calcEmployeeMinMax (employeeData,
employeeMinMax,
SIZE);
// Print the column headers
printHeader();
// print out final information on each employee
printEmp (employeeData, SIZE);
// print the totals and averages for all float items
printEmpStatistics (employeeTotals, employeeMinMax, SIZE);
return (0); // success
} // main
//**************************************************************
// Function: getHours
//
// Purpose: Obtains input from user, the number of hours worked
// per employee and updates it in the array of structures
// for each employee.
//
// Parameters:
//
// employeeData - array of employees (i.e., struct employee)
// theSize - the array size (i.e., number of employees)
//
// Returns: void
//
//**************************************************************
void getHours (struct employee employeeData[], int theSize)
{
int i; // array and loop index
// read in hours for each employee
for (i = 0; i < theSize; ++i)
{
// Read in hours for employee
printf("\nEnter hours worked by emp # %06li: ", employeeData
[i
].
clockNumber); scanf ("%f", &employeeData
[i
].
hours); }
} // getHours
//**************************************************************
// Function: printHeader
//
// Purpose: Prints the initial table header information.
//
// Parameters: none
//
// Returns: void
//
//**************************************************************
void printHeader (void)
{
printf ("\n\n*** Pay Calculator ***\n");
// print the table header
printf("\n--------------------------------------------------------------"); printf("-------------------"); printf("\nName Tax Clock# Wage Hours OT Gross ");
printf("\n--------------------------------------------------------------"); printf("-------------------");
} // printHeader
//*************************************************************
// Function: printEmp
//
// Purpose: Prints out all the information for each employee
// in a nice and orderly table format.
//
// Parameters:
//
// employeeData - array of struct employee
// theSize - the array size (i.e., number of employees)
//
// Returns: void
//
//**************************************************************
void printEmp (struct employee employeeData[], int theSize)
{
int i; // array and loop index
// used to format the employee name
char name [FIRST_NAME_SIZE + LAST_NAME_SIZE + 1];
// read in hours for each employee
for (i = 0; i < theSize; ++i)
{
// While you could just print the first and last name in the printf
// statement that follows, you could also use various C string library
// functions to format the name exactly the way you want it. Breaking
// the name into first and last members additionally gives you some
// flexibility in printing. This also becomes more useful if we decide
// later to store other parts of a person's name. I really did this just
// to show you how to work with some of the common string functions.
strcpy (name
, employeeData
[i
].
empName.
firstName); strcat (name
, " "); // add a space between first and last names strcat (name
, employeeData
[i
].
empName.
lastName);
// Print out a single employee
printf("\n%-20.20s %-2.2s %06li %5.2f %4.1f %4.1f %7.2f %6.2f %7.2f %8.2f", name, employeeData[i].taxState, employeeData[i].clockNumber,
employeeData[i].wageRate, employeeData[i].hours,
employeeData[i].overtimeHrs, employeeData[i].grossPay,
employeeData[i].stateTax, employeeData[i].fedTax,
employeeData[i].netPay);
} // for
} // printEmp
//*************************************************************
// Function: printEmpStatistics
//
// Purpose: Prints out the summary totals and averages of all
// floating point value items for all employees
// that have been processed. It also prints
// out the min and max values.
//
// Parameters:
//
// employeeTotals - a structure containing a running total
// of all employee floating point items
// employeeMinMax - a structure containing all the minimum
// and maximum values of all employee
// floating point items
// theSize - the total number of employees processed, used
// to check for zero or negative divide condition.
//
// Returns: void
//
//**************************************************************
void printEmpStatistics (struct totals employeeTotals,
struct min_max employeeMinMax,
int theSize)
{
// print a separator line
printf("\n--------------------------------------------------------------"); printf("-------------------");
// print the totals for all the floating point fields
// TODO - replace the zeros below with the correct reference to the
// reference to the member total item
printf("\nTotals: %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f", employeeTotals.total_wageRate,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0);
// make sure you don't divide by zero or a negative number
if (theSize > 0)
{
// print the averages for all the floating point fields
// TODO - replace the zeros below with the correct reference to the
// the average calculation using with the correct total item
printf("\nAverages: %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f", employeeTotals.total_wageRate/theSize,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0);
} // if
// print the min and max values
// TODO - replace the zeros below with the correct reference to the
// to the min member field
printf("\nMinimum: %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f", employeeMinMax.min_wageRate,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0);
// TODO - replace the zeros below with the correct reference to the
// to the max member field
printf("\nMaximum: %5.2f %5.1f %5.1f %7.2f %6.2f %7.2f %8.2f", employeeMinMax.max_wageRate,
0.0,
0.0,
0.0,
0.0,
0.0,
0.0);
} // printEmpStatistics
//*************************************************************
// Function: calcOvertimeHrs
//
// Purpose: Calculates the overtime hours worked by an employee
// in a given week for each employee.
//
// Parameters:
//
// employeeData - array of employees (i.e., struct employee)
// theSize - the array size (i.e., number of employees)
//
// Returns: void
//
//**************************************************************
void calcOvertimeHrs (struct employee employeeData[], int theSize)
{
int i; // array and loop index
// calculate overtime hours for each employee
for (i = 0; i < theSize; ++i)
{
// Any overtime ?
if (employeeData[i].hours >= STD_HOURS)
{
employeeData[i].overtimeHrs = employeeData[i].hours - STD_HOURS;
}
else // no overtime
{
employeeData[i].overtimeHrs = 0;
}
} // for
} // calcOvertimeHrs
//*************************************************************
// Function: calcGrossPay
//
// Purpose: Calculates the gross pay based on the the normal pay
// and any overtime pay for a given week for each
// employee.
//
// Parameters:
//
// employeeData - array of employees (i.e., struct employee)
// theSize - the array size (i.e., number of employees)
//
// Returns: void
//
//**************************************************************
void calcGrossPay (struct employee employeeData[], int theSize)
{
int i; // loop and array index
float theNormalPay; // normal pay without any overtime hours
float theOvertimePay; // overtime pay
// calculate grossPay for each employee
for (i=0; i < theSize; ++i)
{
// calculate normal pay and any overtime pay
theNormalPay = employeeData[i].wageRate *
(employeeData[i].hours - employeeData[i].overtimeHrs);
theOvertimePay = employeeData[i].overtimeHrs *
(OT_RATE * employeeData[i].wageRate);
// calculate gross pay for employee as normalPay + any overtime pay
employeeData[i].grossPay = theNormalPay + theOvertimePay;
}
} // calcGrossPay
//*************************************************************
// Function: calcStateTax
//
// Purpose: Calculates the State Tax owed based on gross pay
// for each employee. State tax rate is based on the
// the designated tax state based on where the
// employee is actually performing the work. Each
// state decides their tax rate.
//
// Parameters:
//
// employeeData - array of employees (i.e., struct employee)
// theSize - the array size (i.e., number of employees)
//
// Returns: void
//
//**************************************************************
void calcStateTax (struct employee employeeData[], int theSize)
{
int i; // loop and array index
// calculate state tax based on where employee works
for (i=0; i < theSize; ++i)
{
// Make sure tax state is all uppercase
if (islower(employeeData
[i
].
taxState[0])) employeeData
[i
].
taxState[0] = toupper(employeeData
[i
].
taxState[0]); if (islower(employeeData
[i
].
taxState[1])) employeeData
[i
].
taxState[1] = toupper(employeeData
[i
].
taxState[1]);
// calculate state tax based on where employee resides
if (strcmp(employeeData
[i
].
taxState, "MA") == 0) employeeData[i].stateTax = employeeData[i].grossPay * MA_TAX_RATE;
else if (strcmp(employeeData
[i
].
taxState, "NH") == 0) employeeData[i].stateTax = employeeData[i].grossPay * NH_TAX_RATE;
// TODO: Fix the state tax calculations for VT and CA ... right now
// both are set to zero
else if (strcmp(employeeData
[i
].
taxState, "VT") == 0) employeeData[i].stateTax = employeeData[i].grossPay * VT_TAX_RATE;
else if (strcmp(employeeData
[i
].
taxState, "CA") == 0) employeeData[i].stateTax = employeeData[i].grossPay * CA_TAX_RATE ;
else
// any other state is the default rate
employeeData[i].stateTax = employeeData[i].grossPay * DEFAULT_TAX_RATE;
} // for
} // calcStateTax
//*************************************************************
// Function: calcFedTax
//
// Purpose: Calculates the Federal Tax owed based on the gross
// pay for each employee
//
// Parameters:
//
// employeeData - array of employees (i.e., struct employee)
// theSize - the array size (i.e., number of employees)
//
// Returns: void
//
//**************************************************************
void calcFedTax (struct employee employeeData[], int theSize)
{
int i; // loop and array index
// calculate the federal tax for each employee
for (i=0; i < theSize; ++i)
{
// TODO: Fix the fedTax calculation to be the gross pay
// multiplied by the Federal Tax Rate (use constant
// provided.)
// Fed Tax is the same for all regardless of state
employeeData[i].fedTax = employeeData[i].grossPay * FED_TAX_RATE;
} // for
} // calcFedTax
//*************************************************************
// Function: calcNetPay
//
// Purpose: Calculates the net pay as the gross pay minus any
// state and federal taxes owed for each employee.
// Essentially, their "take home" pay.
//
// Parameters:
//
// employeeData - array of employees (i.e., struct employee)
// theSize - the array size (i.e., number of employees)
//
// Returns: void
//
//**************************************************************
void calcNetPay (struct employee employeeData[], int theSize)
{
int i; // loop and array index
float theTotalTaxes; // the total state and federal tax
// calculate the take home pay for each employee
for (i=0; i < theSize; ++i)
{
// calculate the total state and federal taxes
theTotalTaxes = employeeData[i].stateTax + employeeData[i].fedTax;
// TODO: Fix the netPay calculation to be the gross pay minus the
// the total taxes paid
// calculate the net pay
employeeData[i].netPay = employeeData[i].grossPay - theTotalTaxes;
} // for
} // calcNetPay
//*************************************************************
// Function: calcEmployeeTotals
//
// Purpose: Performs a running total (sum) of each employee
// floating point member in the array of structures
//
// Parameters:
//
// employeeData - array of employees (i.e., struct employee)
// employeeTotals - structure containing a running totals
// of all fields above
// theSize - the array size (i.e., number of employees)
//
// Returns: employeeTotals - updated totals in the updated
// employeeTotals structure
//
//**************************************************************
struct totals calcEmployeeTotals (struct employee employeeData[],
struct totals employeeTotals,
int theSize)
{
int i; // loop and array index
// total up each floating point item for all employees
for (i = 0; i < theSize; ++i)
{
// add current employee data to our running totals
employeeTotals.total_wageRate += employeeData[i].wageRate;
employeeTotals.total_hours += employeeData[i].hours;
employeeTotals.total_overtimeHrs += employeeData[i].overtimeHrs;
employeeTotals.total_grossPay += employeeData[i].grossPay;
employeeTotals.total_stateTax += employeeData[i].stateTax;
employeeTotals.total_fedTax += employeeData[i].fedTax;
employeeTotals.total_netPay += employeeData[i].netPay;
} // for
return (employeeTotals);
} // calcEmployeeTotals
//*************************************************************
// Function: calcEmployeeMinMax
//
// Purpose: Accepts various floating point values from an
// employee and adds to a running update of min
// and max values
//
// Parameters:
//
// employeeData - array of employees (i.e., struct employee)
// employeeTotals - structure containing a running totals
// of all fields above
// theSize - the array size (i.e., number of employees)
//
// Returns: employeeMinMax - updated employeeMinMax structure
//
//**************************************************************
struct min_max calcEmployeeMinMax (struct employee employeeData[],
struct min_max employeeMinMax,
int theSize)
{
int i; // array and loop index
// if this is the first set of data items, set
// them to the min and max
employeeMinMax.min_wageRate = employeeData[0].wageRate;
employeeMinMax.min_hours = employeeData[0].hours;
employeeMinMax.min_overtimeHrs = employeeData[0].overtimeHrs;
employeeMinMax.min_grossPay = employeeData[0].grossPay;
employeeMinMax.min_stateTax = employeeData[0].stateTax;
employeeMinMax.min_fedTax = employeeData[0].fedTax;
employeeMinMax.min_netPay = employeeData[0].netPay;
// set the max to the first element members
employeeMinMax.max_wageRate = employeeData[0].wageRate;
employeeMinMax.max_hours = employeeData[0].hours;
employeeMinMax.max_overtimeHrs = employeeData[0].overtimeHrs;
employeeMinMax.max_grossPay = employeeData[0].grossPay;
employeeMinMax.max_stateTax = employeeData[0].stateTax;
employeeMinMax.max_fedTax = employeeData[0].fedTax;
employeeMinMax.max_netPay = employeeData[0].netPay;
// compare the rest of the items to each other for min and max
for (i = 1; i < theSize; ++i)
{
// check if current Wage Rate is the new min and/or max
if (employeeData[i].wageRate < employeeMinMax.min_wageRate)
{
employeeMinMax.min_wageRate = employeeData[i].wageRate;
}
if (employeeData[i].wageRate > employeeMinMax.max_wageRate)
{
employeeMinMax.max_wageRate = employeeData[i].wageRate;
}
// TODO: do the same checking for all the other min and max items
// ... just repeat the two "if statements" with the right
// reference between the specific min and max fields and
// employeeData array of structures item.
} // else if
// return all the updated min and max values to the calling function
return (employeeMinMax);
} // calcEmployeeMinMax